Locking means for adjustable brake heads



Mar. 10, 1925.

E. G. BUSSE LOCKING MEANS FOR ADJUSTA BLE BRAKE mums Filed July 5, 1924 2 h -Sheet 1 6 fizzlerziar Mafia 6'. 52Jae i Mal-.10, 1925.

E. G. BUSSE LOCKING MEANS FOR ADJUSTABLE BRAKE HEADS 2 Sheets-Sheet 2 Filed July 1924 Patented Mar. 10, 1925.

EDWIN G. BUSSE, OF CHICAGO, ILLDVOIS,

AS SIGNOR T CHICAGO RAILWAY EQUIP- MENT COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

LOCKING MEANS FOR ADJUSTABLE BRAKE .HEADS.

Application filed July 3,

To all whomz't may concern:

Be it known that I, EDWIN G, BUssE, a citizen of the United States, residing at Chicago, Illinois, have invented a certain new and useful Improvement in Looking Means for Adjustable Brake Heads, of which the following is a specification, such as will enable others skilled in the art to which it appertains to ,make and use the same.

This invention relates to new and useful improvements in safety locks for automatically adjustable brake heads, and the objects of the invention are to provide a locking 0 device which serves as a safety element and prevents the displacementof the brake head in case the gripping block or pawl or parts associated therewith become disabled.

Other objects of the invention are to provide simple and economical safety means for locking the brake head against lateral or rotary movement, or both, which safety device can be used in conjunction with the existing types of brake heads and can be readily and conveniently applied in position.

With these and other objects in view, my invention consists in certain novel features of construction and arrangement of parts, hereinafter more fully described and claimed, and illustrated in the accompanying drawings, in which Figure 1 is a vertical cross section taken through a brake head and one. end of a brake beam and showing the safety lock attached a thereto.

Figure 2 is a vertical cross section taken on line 2-2 of Figure 1.

Figure 3 is a vertical cross section through the brake head and one end of the brake beam and showing a modified form of safety lock.

Figure 4 is a cross section taken on line 44 of Figure 3.

Figure 5 is a vertical cross section through a brake head and one end of the beam and showing another modified form of a safety lock.

Figure 6 is a cross sectional view taken at right angles to Figure 5 with the brake beam sleeve in elevation.

Figure 7 is a cross sectional view of the brake head and one end of the brake beam and showing another modified form of the safety lock.

Figure 8 is a cross sectional view taken at' 1924, Serial No. 723,917.,

sleeve in elevation.

.The present invention is adapted particu larly for use with brake heads automatically adjustable onthe brake beam. In this form of the brake head, a sleeve is arranged on each end of the brake beam and the sleeve is provided with a circumferentially disposed groove, the peripheral face of which groove is serrated or formed with longitudinally disposed corrugations with which is adapted to cooperate the serrated concave face of a gripping block or pawl mounted in said brake head and held in yielding engagement with said sleeve in any suitable manner. The annular shoulders or flanges formed on said sleeve bysaid groove form suitable journals for the circular-housing or bearing formed in each brake head. The gripping block projected into engagement with the serrated face of the groove occupies the space between the annular shoulders or flanges and thus prevents the lateral movement of the brake head relative to the brake beam.

It is the purpose of the present invention to provide a safety lock which will interengage and interlock the brake head and the sleeve independently of the usual gripping block, thereby eliminating all danger of the brake iheadbecoming loose or displaced in case said gripping block or pawl or parts associated therewith are broken or displaced.

Referring by numerals to'the accompanying drawings, 10 indicates a compression member and 11. a tension member of atrussed brake beam. 12 is a sleeve fixed on each end of the brake beam and forming journals or bearings for a brake head 14. Each sleeve 12 is provided with a circumferentially disposed groove or depressed portions 12, the peripheral faces of which are provided with longitudinally disposed serrations or corrugations 12 The annula-r shoulders or flanges 15 formed thereby on sleeve 12 have bearings in a circular housing 14 formed in brake head 14; and rotatably support said brake head 'on the beam. Brake head 12 is provided with a housing 14 in which is slidably arranged a gripping block or pawl 16 having a concave face 16 provided with suitable serrations or corrugations for engaging the corrugations of sleeve 12. I

Block 16 is held inyielding engagement llO with sleeve a,1coiled spring lfiZ-disposedgz byzt-urning saidzanut, saidrwed'ge member 31 in housing 14*: through housing 14 .in a suitable recess or poeketc fmtmedeim cotter pin is block 161 The opposaa'or vt'hmde geaa at;

said bolt extends outwardly from housing 14 and receives a nutil9;ibyathewre ationsof" which in the proper direction, block 16 may be retracted from its operative-position to permit the insertion and removal of the brake head' 'on thebeamawi A bolt 18 eirtends fipwa rdlycan he 'drawnup tightly and has its head--seatedagainst the safety member 28 after which nut 32 is looked on the threaded.end f said wedge by a cotter lpin B JCQL -Y i i A inodifiedform shown in Figures 7 and 8 ;;c0nsis ts' o:t-.awedge; member 35 which is driven tangentially to and in engagement withr the nserratedi;s-iperipheral face of the sleeve through suitable openings 36 formed When the parts are assembled' in-position Whentine nber 355E411; position its :ent'ering end: isbeiit upwar dly as indicated at: 3 8=i1i1 order zfto prevent the .=remo val=rof said; dock the brake, head is held against glater-al" inovementjbyfivirtue of 'th'e' 1i interen'gag'ement f vblookS -16 with the annu-lar shoulders ef flanges and ''saidbrake he'ad allowed to-fpivotror t i-lt onsaid sleeve' -in order -to automatically adjust'i 'tlie brake' shoefltothe Wh1 a Toplrevent displacement-0f the--hrake headin case of the disengagement ofthe gripe pingblockdrom' the-sleeve caused by break'- age either-spring. or from any other causam a sa fety" lock is provided "which" -inter'locks-- the" brakefhead with the sleeve inde endently of---jthe gripping pawl? This 's'afet'y lock consists of {a2 member 3 2G which" ext'endsfin wardly through; suitable openi'ng iformed in 'eiroular' hoi'l'sing 14? and ha's -i coneav'e inner face provided with serrations i01 lengaging the serrated face-of sleeve This blockor; member has an upstanding-ear;

or liigj221 provided with a" suitahle apertu-re 3 ping for the receptionof' a cotterpin 24, which of the? brake" headi Thus thejbr-a'ke head is positively interlocked with the {sleeveand is retaineddn 'positi n on} t=lie-= beam under all cond'itions." I

In the-mod fied formishown in'Figiuresfi and a" safety lock= memben25= isiprovided with an outwardly presented I placket: or; re-

cess forz'the reception or acoiled spring 126;- r: with a peripheral groove,

naled: :on -Silld sleeve; a gr ppingizblock car:

the, lower end ot 1 which :bears' against-ii said block: while its upper i end bearsg 'against a member" 25 in engagement with the isleeve', thereby permittingg; wthe fiaiutomatic. adjeust v :ment of the brake hea d on theibeamaandvat'f the -f's'ame time securely locking the'i. :b'rake head in position on the: sleeve ias atheicotter pin 27" prevents: thejzremoval or 'idlsplace i mentof said safety bloek 12551 In j the modified? formgs-hoavn in Figures secured at its ends to the walls safety member -from thehousi gwl l m l claim-t in the circular housing leer brake head' slh 1. In abrakefigea vconstruction, the com =b1n'at1on oi-a beamz parts, :av brakewhead rad-.1

'justably arranged lthereom a gripping pawl 'carried by said brake head and yieldingly engaging 5211dbrake b63311: part; for; adjustably-holding said bra-kejhea-d in position, andw a safetylock memb'ercarried by saidabra' kelhead and projecting therefromainto a p.0-si-*-- 1 tlon for engagement :Wit-h: said brake beam 0 5 part and thereby' hold. "sai d :brake; head:

against lateral movement;

2. In abrakelvgear construction; the coma-o bina'tion of a brake beam part: having a serrated PQDIPhG-IH-l wal-l1 and shouldered cannular 'extensionswa braked head rotatably@ :mounted' on saidbraliecbeam part; av gripe;

pawl-married by said brake %head" and;

I yieldinglyengaging said peripherals wall, a

head andhaving a se-rratedlconcave face locking member carried by saidibrake" fonengaging said. peripheral .wall of said-H ried by said brake head and yieldingly zzen-j gaging said: sleeve. forv adjustably retaining 1 said brake head in operative position; and a;

safety-z lock :member: carriech -.by said: brake brake beam part and cooperating :with said, ann ular extensions for preventing the lateral 5 headland disposediin-saidperipheraLgroove;

of said-sleeve; forapositively locking said brake head against displacement from saidsleeves v v 4:- The combination of a, brakeybeain a sleeve-fixed, .to one ;-end 2 thereof-V and; provided with :a: peripheral. groove: having a 5 and' G' a safety lock memb r 8=is-provided serrated race-,a brake; headjournaled .011

withanapertured lugor can 29,:at one-end i said sleeve, a gripping pawl carried by said for 'thereception of ail cotter-'1 pin for; sirnil' ar brake..- headwandz;'yieldingly; engagingthe fastening device-30'h A- wedged; keya; 31] serratedaperipheralface.of said, grQOVejfQI" traversesqthe openings: formed in the, wallsi yieldingly maintaining said-,cbra-ke g; head; in of thee-brake, head: and bears: dn' thejiioppgrm its adjusted oper-ativeposition, and a-safety site-endaof said safetyme'mberand forceslockmember carried bysaidbrake'head and,

the latter in fixedfengageinent with the l engagingithe face, of saidgroove forjlimitw. sleeve. One end otthe wedge memberefil'f ing the lateral movement of said brakeu is threaded .andirece'ives anut, 32-.Whereby, head.... 7 r

5. The combination of a brake beam, a sleeve fixed to one end thereof and pro vided with a peripheral groove having a serrated face, a brake head journaled on said sleeve, a gripping pawl carried by said brake head and yieldingly engaging the serrated face of said groove for maintaining said brake head in adjustable operative position, a safety lock member mounted in said brake head and having bearing in said peripheral groove, thereby holding said brake head against displacement, and a retaining member for securing said lock member in position on said brake head.

6. The combination of a brake beam, a sleeve fixed thereon and provided with a peripheral groove, the face of which is serrated, a brake head journaled on said sleeve, a gripping pawl carried by said brake head and engaging said serrated face for yieldingly retaining said brake head in adjusted position on said beam, a safety lock member mounted in said brake head and having a face portion for engaging the serrated face of said groove, thereby interlocking said brake head and said sleeve independently of said gripping pawl, and means for forcing said safety lock member into engagement with said sleeve.

7 A brake head having a journal opening, a gripping pawl carried by said brake head and extending into said journal opening for preventing the axial movement of said brake head, and locking means for locking said brake head in its operative po sition.

8. In a brake gear construction, a brake head having a journal opening to receive a journal part of a brake beam, a gripping pawl on said brake head and extending into said opening to engage said brake beam part and lock the brake head against lat eral movement, and auxiliary locking means carried by said brake head for locking the same in operative position.

9. In a brake head construction, a brake head adapted to be rotatively mounted and held against axial displacement, and an auxiliary locking member in said brake head for positively locking the same in operative position.

10. A brake head having a journal opening and provided with a gripping pawl adapted to engage the brake head journal and hold said brake head against lateral movement, and locking means carried by said brake head and adapted to engage said journal for locking said brake head against displacement independently of said gripping pawl.

11. A brake head having a journal hous ing adapted to rotatively receive a brake beam part, a gripping pawl arranged in an extension of said housing for engaging said brake beam part and locking said brake head thereto, and a member seated in said housing and extending thereinto and adapted to lock said brake head to said brake beam part independently of said gripping pawl.

In testimony whereofI hereunto affix my signature this 26th day of June, 1924:.

EDWIN G. BUSSE. 

